Temperature dependence of photoluminescence spectra in hole-doped single-walled carbon nanotubes: Implications of trion localization

2013 ◽  
Vol 87 (4) ◽  
Author(s):  
Shinichiro Mouri ◽  
Yuhei Miyauchi ◽  
Munechiyo Iwamura ◽  
Kazunari Matsuda
Keyword(s):  
Carbon Nanotubes ◽  
Temperature Dependence ◽  
Single Walled Carbon Nanotubes ◽  
Photoluminescence Spectra ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

Temperature dependence of Raman shift in defective single-walled carbon nanotubes

2021 ◽  
Author(s):  
Masanori Endo ◽  
Haruki Uchiyama ◽  
Yutaka Ohno ◽  
Jun Hirotani
Keyword(s):  
Carbon Nanotubes ◽  
Temperature Dependence ◽  
Phonon Scattering ◽  
Single Walled Carbon Nanotubes ◽  
Raman Shift ◽  
Band Frequency ◽  
Single Walled Carbon ◽  
Negative Change ◽  
Walled Carbon Nanotubes ◽  
Induced Defects

Abstract Raman scatterings of both pristine and defective single-walled carbon nanotubes were measured. Defects on carbon nanotubes (CNTs) were induced by UV/O3 treatment, and the correlation between the temperature dependence of the Raman shift of the G-band and the crystallinity of CNTs was investigated. In the temperature range of 250–600 K, a gradual negative change in the slope was observed; the linear shift of the Raman G-band frequency with respect to temperature increased as the crystallinity deteriorated. This phenomenon is attributed to the increase in the fourth-order phonon-phonon scattering interaction resulting from the induced defects.

C60(OH)n-ASSISTED DISPERSION OF SINGLE-WALLED CARBON NANOTUBES

NANO ◽  
2008 ◽  
Vol 03 (06) ◽  
pp. 455-459 ◽  
Author(s):  
YUTAKA MAEDA ◽  
TAKAAKI KATO ◽  
JUNKI HIGO ◽  
TADASHI HASEGAWA ◽  
TAKAHIRO KITANO ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Large Diameter ◽  
Single Walled Carbon Nanotubes ◽  
Photoluminescence Spectra ◽  
Nonaqueous Solutions ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

We demonstrate that C 60( OH )n-assists the dispersion of SWNTs in aqueous and nonaqueous solutions, which effectively exfoliates large-diameter SWNTs. The SWNT dispersions are characterized by absorption and photoluminescence spectra.

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